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The flickering might probably have been a puff of magic smoke, but the tiger stripes are definitely an artifact on a glass surface. http://laserpointerforums.com/f52/ebay-thor-laser-93771.html Try cleaning the lens on the diode with a factory-fresh Q-tip and cleaning or replacing the...

You all brought up a lot of very good points. If I had $2000 then I'd do it all, but it's never that simple. DPSS lasers is in the lead edit: Then again, another thing to think about is when the DPSS wavelengths will become available in diode form. But then I'd lose the divergence and give in to...

I've been selling lasers on ebay since Nov. '14, and it always wows people on my resume, but I don't have time for that with the last semester of school and trying to find work. What would you do? Do I: Embezzle all my monies and use it for a new graphics card Build one last laser, 7W Buy fancy...

If a green laser won't light a match when focused, it's below 60mw. Most chinese lasers are 15-40mw with a few exceptions at 50, 60 and if you're a lucky son of a gun, 70-80mw. This is filtered raw green light. You might want to ask a willing member to measure your laser for you. I think there's...

Pretty lucky. I get hit in the eyes all the time with class 1mw presentation lasers. When the dots get close to my eyes, it feels like my eyes got hit. It's possible that most of the radiation was focused just close to your eyes and not into them

So I really like doing simulation work, and I'm applying for hundreds of internships and I'm afraid I might be stuck going to grad school instead of moving out of my parents' house. If you have need for simulations regarding heat transfer in your laser designs or fatigue failure or mechanical...

Not a scam, but beware that rates on store cards are huge compared to bank cards.. but you could cancel it right away like one of my friends always does. Make sure it's on the real amazon site instead of a third party ad :beer: here's to the wonderful world of internet shopping

If you are to engineer your own safety glasses (and as an engineer, I strongly advise against it), then you need to first purchase proper safety glasses that you can wear while testing the light transmission through the material onto an LPM sensor via direct hit. What I mean to say is that using...

Good point. That's why nobody drives diodes in parallel. I need to go home and rethink my circuit

I can't find the thread, but someone on the forum had made their own safety glasses with some of those flimsy filters, the same in those glasses, and the light burned through them and they got permanent eye damage. Do not make that mistake. If you're going to buy a serious laser, buy some...

Oh, I'm sorry. I just realized that the fasteners aren't even in the way. The heatsink is cemented to the diode module. Any way I can separate them? Edit: alternately, if anyone knows the pinout here I shined a light into the lens and measured the pads, but got no voltage at all. 12 looks like...

I believe the mismatched feedback problem is only a problem when the output is a voltage instead of a current. It would be different if the feedback was a current instead of a voltage

So i have teh 24 led module then do i just hook up to a car battery? just kidding. I have a brand new 24LD A140 casio module, and I was wondering if anyone could help me disassemble it without destroying it. Casio obviously knew people like us would attempt it, so they put some sort of...

You are correct that if you don't get a beam in your eyes, you won't go instantly blind; and at the same time, you shouldn't point any laser into your eye and press the button. The quote you're talking about is probably about lasers under 200mw. Any class 4 laser is unsafe to view (the dot)...

It sounds really heavy duty. Unfortunately I already have the power supply

This is the best thing. First I thought of using the energy from the lemons, but that would have started a fire. I threw about 5 pepper seeds in and waited 2 weeks, then nothing sprouted and I added a bunch of seeds from strawberries, raspberries, peas, and blackberries, and seeds from pickled...

;P gotcha. Not conducting the experiment though, and I want to officially state that nothing I said in this thread is to be considered as any type of scientific evidence correlating any results to any hypothesis. I just like spicy food

LEDs are definitely a good choice, but I just had this 10mw module lying around so I thought i'd give it a go. The sprout is perking up really fast compared to what my mom's growing under her LEDs (635nm+450nm; good for chlorophyll b). If you look at the third attachment in the OP, it might...

They do ok according to Yamazaki, but apparently they need to be supplemented with a second wavelength or else they grow up stunted in some way, like to have narrow leaves and not yielding many seeds. Otherwise it says they mature faster

Now, I don't have the interest to grow plants in a very scientific way, compiling data for 4 years on pepper plants, but it would be interesting to see the effects of lasers on plant growth. There haven't been many studies on it published online. Yamazaki UCSB Those are literally everything I...